- Synthesis of Symmetric Binuclear 5,6-Dihydro-1,2,4,5-tetrazinium Perchlorates
-
Abstract: A series of 3,3′-(1,4-phenylene)bis(1-4-R-phenyl)-5-phenyl-5,6-dihydro-1,2,4,5-tetrazinium) perchlorates (R = H, Me, Cl, OMe, CN, NO2) were obtained as a result of a three-stage synthesis from terephthalic aldehyde. The synthesis of tetrazinium salts was carried out by reaction of the corresponding formazans with formalin in the presence of perchloric acid in dioxane. Formazans and tetrazinium perchlorates were isolated in individual state and characterized by elemental analysis, IR, UV, 1H, and 13C NMR spectroscopy data. The process of electrochemical reduction of tetrazinium perchlorates was studied using the method of cyclic voltammetry (CV). It has been shown that these compounds are perspective precursors of symmetric biradical systems based on verdazyl radicals.
- Asfandeev, A. Yu.,Burtasov, A. A.,Idris, T. D.,Kostryukov, S. G.,Kozlov, A. Sh.,Krasnov, D. A.,Petrov, P. S.,Tezikova, V. S.
-
p. 614 - 620
(2021/06/02)
-
- No carrier-added nucleophilic aromatic radiofluorination using solid phase supported arenediazonium sulfonates and 1-(aryldiazenyl)piperazines
-
This Letter concerns the investigation of a solid phase based method for no carrier-added nucleophilic [18F]fluorination of aromatic compounds via de-diazofluorination. Initial screening of reaction conditions was conducted using soluble analog
- Riss, Patrick J.,Kuschel, Sonja,Aigbirhio, Franklin I.
-
supporting information; experimental part
p. 1717 - 1719
(2012/05/04)
-
- Unusually stable, versatile, and pure arenediazonium tosylates: Their preparation, structures, and synthetic applicability
-
(Graph Presented) A new, simple, and effective method for the diazotization of a wide range of arylamines has been developed by using a polymer-supported diazotization agent in the presence of p-toluenesulfonic acid. Various pure arenediazonium tosylates with unusual stabilities can be easily prepared by this method. As a result, these salts are useful and versatile substrates for subsequent transformations, such as halogenation and Heck-type reactions. The unusual stabilities of arenediazonium tosylates are also preliminarily discussed with their X-ray structures.
- Filimonov, Victor D.,Trusova, Marina,Postnikov, Pavel,Krasnokutskaya, Elena A.,Lee, Young Min,Hwang, Ho Yun,Kim, Hyunuk,Chi, Ki-Whan
-
supporting information; experimental part
p. 3961 - 3964
(2009/05/30)
-
- Iodination of aryl amines in a water-paste form via stable aryl diazonium tosylates
-
The diazotization of aryl amines at room temperature in paste form with NaNO2, p-TsOH and a small amount of water, followed by treatment with KI provides a new, simple, and effective route for the preparation of various aryl iodides. The water-paste and strong acid-free reaction conditions are environmentally friendly and compatible with acid-sensitive functional groups.
- Gorlushko, Dmitry A.,Filimonov, Victor D.,Krasnokutskaya, Elena A.,Semenischeva, Nadya I.,Go, Bong Seong,Hwang, Ho Yun,Cha, Eun Hye,Chi, Ki-Whan
-
p. 1080 - 1082
(2008/09/18)
-
- Electro-optical materials and light modulator devices containing same
-
Azo-type optically active compounds and polymers are provided based on compounds of the general structure wherein aryl substituents are introduced which hinder or prohibit rotation around the single bonds of the --N=-- central moiety (as well as around certain other single bonds), to provide "planarized" structures having improved optically active properties, especially electro-optically active properties. These compounds and polymers find use in optically active waveguides.
- -
-
-